Rhododendron Mrs T.H. Lowinsky

Plant the Rhododendron Mrs T.H Lowinsky in a shaded, partially shaded or even mildly sunny position, protected from cold and drying winds, in a moist, humus-rich, light, acid or neutral soil. Like all ericaceous plants, it does not tolerate chalky soils or heavy soils saturated with water in winter. If the soil remains moist in summer, this rhododendron will also tolerate morning sun exposure. Avoid planting at its base, as its shallow roots do not tolerate competition from other plants, especially for water.

Dig a hole three times larger than the pot. Soak the root ball in lime-free water and plant the bush at the collar level, in a mixture composed of 1/4 organic matter, leaf mold, gravel or pumice and loam. Water generously and keep the soil moist in summer. Azaleas and Rhododendrons have a shallow root system. As a result, they dislike long periods of drought. This is why soil enriched with humus, and abundant watering during dry periods is recommended. In addition, this root system is not very strong, which is why it is essential to lighten heavy soils with free-draining materials (gravel, pumice, clay balls) at planting. Apply a layer of shredded pine bark mulch around the base of the bush every spring to maintain soil moisture while preserving an acidic pH.

Maintenance consists of cutting off faded flowers in summer and removing dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils, which eat the edges of leaves and rootlets, as well as the famous "rhododendron beetle," which does not often cause significant damage. Effective biological solutions are now available against weevils. Yellowing of the leaves (chlorosis) in Rhododendron indicates poor uptake of iron from the soil and can cause premature death of the plant. While chalk is often the cause, poorly drained soil or deeply planted root balls can also cause the phenomenon.

"Rhodos" thrive when planted in chalk-free soil and in a humid environment. Their cultivation in warmer and drier climates is often doomed to failure in the long run, despite all attempts to acclimatize them.